<markdown>
# HowTo build a Docker Image
## ... for my python experiments

 * Use the latest ubuntu docker-image from hub.docker.com
   * as I need the recent libolm3 and libolm-dev
 * In my git repository I created
   * the _.dockerignore_ file 
 * as well as the subfolder _docker_ in which I created
   * the _Dockerfile_ and
   * the _docker-compose.yml_.

### Dockerfile 
```
# syntax=docker/dockerfile:1

FROM ubuntu:latest

ENV TZ=Europe/Berlin
RUN ln -snf /usr/share/zoneinfo/$TZ /etc/localtime && echo $TZ > /etc/timezone

WORKDIR /app
VOLUME /app

COPY . .

RUN ls -la
RUN ["cat", "/app/requirements.txt"]

RUN /bin/bash -c 'apt update && apt install -y libolm-dev python3-pip ffmpeg;'


RUN pip install update pip && pip install -r requirements.txt


CMD python3 fritzab2matrix.py && tail -f /dev/null


```
**docker-compose.yml**
```
version: "3.7"

services:
  app:
    container_name: "fritzab2matrix"
    build:
      context: ../.
      dockerfile: ./docker/Dockerfile
    working_dir: /app
    volumes:
      - ./:/app


```
**.dockerignore**
```
*~
docker-compose.yml

```

</markdown>

Che
ck